A federal lawsuit alleges that Chicago police sodomized a man with a gun until he agreed to become a participant in a drug sting, the Courthouse News Service reports. Plaintiff Angel Perez is suing police officer Jorge Lopez and the city of Chicago for excessive force related to the incident, which, according to the lawsuit, was quite the nightmare.

After Chicago police pulled over and arrested delivery driver Angel Perez in October 2012, police at the station questioned and allegedly assaulted Perez in an attempt to learn intel on robberies and drug dealers, though Perez said he did not know anything about those alleged crimes. Perez repeatedly requested a lawyer, but the police paid him no heed.

Perez says the police released him, but called him the next day and told him that his arrest was a mistake and that he needed to sign papers to prevent his car from being towed. But when Perez arrived, Lopez “slammed” his head on a car and then arrested him again.